CVE-2016-4440

Impact:
Moderate
Public Date:
2016-05-18
CWE:
CWE-284
Bugzilla:
1337806: CVE-2016-4440 Kernel: kvm: vmx: incorrect state update leading to MSR access

The MITRE CVE dictionary describes this issue as:

arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3 mishandles the APICv on/off state, which allows guest OS users to obtain direct APIC MSR access on the host OS, and consequently cause a denial of service (host OS crash) or possibly execute arbitrary code on the host OS, via x2APIC mode.

Find out more about CVE-2016-4440 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 5.5
Base Metrics AV:A/AC:H/Au:S/C:P/I:P/A:C
Access Vector Adjacent Network
Access Complexity High
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Not affected
Red Hat Enterprise Linux 7 kernel-rt Not affected
Red Hat Enterprise Linux 7 kernel Not affected
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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